Glutathione in Our Diet and Its Role in the Body: From Disease Prevention to Anti Aging[v1] Preprints.org Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get Glutathione, A Powerful Antioxidant Indigo Health Foods With L Glutathione: Avocado, Watermelon, and More GoodRx